```
% pandoc -f html -t html
<mark>Ctrl-C</mark>
^D
<mark>Ctrl-C</mark>
```

```
% pandoc -f html -t native
<mark>Ctrl-C</mark>
^D
[ Plain [ Span ( "" , [ "mark" ] , [] ) [ Str "Ctrl-C" ] ] ]
```

```
% pandoc -f native -t html
[Plain [Span ("",["mark"],[]) [Str "Ctrl-C"]]]
^D
<mark>Ctrl-C</mark>
```